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if we're actually thinking about electron configuration and we look at lithium, sodium and potassium, these all have one valence electron.
让我们来想一想,锂，钠，钾的电子排布，它们都只有一个价电子。
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And, at the other extreme, we have elements with very high value, elements with high average valence electron energy.
另外，在另一端，我们有原子序数较大的元素，这些元素有着较高的平均化合价和电子能。
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And the idea is that when you do these Lewis dot structures, we're representing electrons with dots, which we'll see in a minute, and each dot is going to represent a valence electron.
而当你遇到这些路易斯点结构时，我们会将电子用点来表示，我们马上就会看到，每个点都代表了一个价电子。
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OK, elements with low average valence electron energy, and here I'm saying below 11 electron volts, these are good electron donors.
平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。
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Its average valence electron energy is 5.2 electron volts, which is a heck of a lot less than 11.
它的平均价电子能是,5。2电子伏，那比11电子伏要少得多。
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We have to account for that in some way because we know that they don't have identical average valence electron energies.
我们需要从一些方面来解释一下,因为我们都知道,他们没有相同的,平均价电子能。
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And we do so by a quantity called the average valence electron energy.
我们可以通过,一个叫做平均价电子能的量来解决这一问题。
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Over here in the lower left corner, we have elements that as a group have very low values of average valence electron energy.
在底层的左侧角落，我们看到以组为单位的,价电子能较低的元素。
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And this looks a lot like the average valence electron energy where the lowest values of electronegativity are in the metallic zone and the highest values of electronegativity are on the nonmetallic zone.
这看起来像是平均电子能,最低的电负性在,金属区最高的电负性在,非电子区。
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Place the non-bonding pairs on peripheral atoms first, which the higher average valence electron energy.
首先将孤对电子放在外围的原子，那儿具有较高的平均价电子能。
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So let's think about what the valence electron configuration is here.
让我们看看这里的,电子构型是什么样的。
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So then, I could say that the average valence electron energy for oxygen would then be, I've got two s electrons.
所以，我可以说,氧的平均价电子能,就是，以我得到的两个s轨道的电子来算。
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It's got an average valence electron energy of about 16 eV, 16.5 eV, which is a lot greater than 11.
它的平均价电子能,大约是16eV，16。5eV，那比11要多很多。
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Just to refresh our memories, we looked at the average valence electron energy as a measure of reactivity.
重新回顾一下我们记忆，我们看了平均价电子能,能用来测量反应性。
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And up in the other extreme are elements with very high average valence electron energy.
和那些特别元素,它们具有很好的平均价电子能。
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And, it says, OK, center the element with the lowest average valence electron energy.
它说，好的,把具有最低平均价电子能的元素画在中心。
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So, how does average valence electron energy very across the periodic table?
那么平均价电子能,怎样才能对元素周期表产生很大影响呢？
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What do we know about the average valence electron energies?
我们对于平均价电子能,的了解有多少？
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So, Lewis structures are really a model for a way to think about what the valence electron configuration is, and as I said, it's not based on quantum mechanics, it's something that Lewis observed far, far before quantum mechanics were discovered.
路易斯结构实际上是一个用来考虑价,电子排布的模型，而就像我说的，它并不以量子力学为基础，而是路易斯在以前发现的,在量子力学出现很早前。
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It's got a very low average valence electron energy.
它的平均价电子能很低。
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These have low average valence electron energies.
他们有较低的平均价电子能。
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Chlorine has a high valence electron energy.
氯的价电子能很高。
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It makes sense, right, because they're the furthest away from the nucleus, they're the ones that are most willing to be involved in some chemistry or in some bonding, or those are the orbitals that are most likely to accept an electron from another atom, for example. So the valence electrons, those are the exciting ones.
它讲得通，对，因为它们距离,原子核最远，它们是最容易发生,化学反应和结合的地方，另一个原子的电子的轨道或者它们是,最容易接受，举个例子所以价电子，他们是活跃的电子。
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If you take a look at the last day, or the day before, you will see that we talked about average valence electron energy.
如果你注意到昨天或者前天的事，你将看到,我们讨论的是平均价电子能。
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0eV This is almost 20 eV, high average valence electron energy, greater than 13 electron volts.
它的价电子能是，这是很高的价电子能，比13电子伏要高。
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They have the highest average valence electron energy in any shell.
它们有最大的价电子能,任意一层都是这样。
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All right, well, oxygen has the highest valence electron energy.
好吧，氧具有最高价电子平均能。
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N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.
任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点，因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况，包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。
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Cl We know that because the sulfur and the chlorine in the oxygen have different average valence electron energies, they'll have different electron affinities.
我们都知道因为S和,在氧气中,具有不同的平均价电子能，所以他们的电子亲和力也不同。
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So let's think about what this valence electron configuration is for c 2.
让我们来看一下C2的,价电子构型是怎么样的。
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